ft_memcmp.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memcmp.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: omoudni <omoudni@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/24 13:58:01 by omoudni           #+#    #+#             */
/*   Updated: 2021/12/01 11:50:30 by omoudni          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_memcmp(const void *s1, const void *s2, size_t n)
{
	const unsigned char	*str1;
	const unsigned char	*str2;

	str1 = (unsigned char *)s1;
	str2 = (unsigned char *)s2;
	if (!str1 || !str2)
		return (0);
	while (n && *str1 == *str2)
	{
		str1++;
		str2++;
		n--;
	}
	if (!n)
		return (0);
	return (*str1 - *str2);
}